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Biological and physical processes
All continuing activities, functions, and phenomena associated with organisms and non-living matter.
Subtopics:
Atmospheric and climatic processes (166 items)
Coastal processes (32 items)
Ecological processes (100 items)
Estuarine processes (2 items)
Evolution (1 items)
Fires (24 items)
Geochemical processes (18 items)
Geologic processes (315 items)
Hydrologic processes (250 items)
Impact cratering (1 items)
Ocean processes (43 items)
Physiological processes (8 items)


Results 11 - 20 of 749 listed alphabetically [list by similarity]
PDF A climate trend analysis of Senegal [More info]
Modest declines in rainfall, accompanied by increases in air temperatures, declining farmland per person, along with trends in population and agriculture could lead to a 30% reduction in per capita cereal production by 2025.
PDF A climate trend analysis of Sudan [More info]
The data shown here depict drying trends in one of the world's most food insecure regions. Decreasing rainfall since 1980 accompanied increases in air temperature greater than global warming.
PDF A climate trend analysis of Uganda [More info]
Long-term reduction in rainfall and increasing temperature threaten Uganda's future food production prospects; combined with rapid population growth these factors could increase the number of people who are at risk during the next 20 years.
PDF A dryland river transformed--the Little Colorado, 1936-2010 [More info]
We mapped substantial migration of the river channel between the City of Winslow and the Navajo Nation community of Leupp; in a human lifetime the river has moved more than a mile across its valley floor.
PDF A science strategy to support management decisions related to hypoxia in the northern Gulf Of Mexico and excess nutrients in the Mississippi River Basin [More info]
The report describes a strategy for monitoring, modeling, and research activities to support management decisions to improve water-quality conditions in the Mississippi River Basin, reduce hypoxia in the northern Gulf of Mexico, and improve conditions for
PDF A spatial analysis of cultural ecosystem service valuation by regional stakeholders in Florida: a coastal application of the social values for ecosystem services (SolVES) tool [More info]
Research project to close gaps in our knowledge about the attitudes and perceptions, or nonmonetary values, held by coastal residents for ecosystem services, particularly for cultural services.
PDF A volcano rekindled; the renewed eruption of Mount St. Helens, 2004-2006 [More info]
PDF A westward extension of the tropical Pacific warm pool leads to March through June drying in Kenya and Ethiopia [More info]
Analysis of sea-surface temperature in the Indian Ocean shows that warming correlates with east African rainfall; the effect on atmospheric convection and precipitation over the Indian Ocean is greater than that associated with El NiƱo (ENSO).
ANSS - Advanced National Seismic System [More info]
Nationa network of seismic monitoring stations coordinated with a variety of regional organizations and academic institutions.
Access USGS - San Francisco Bay and Delta [More info]
Main page for accessing links for information and data on the San Francisco Bay estuary and its watershed with links to highlights, water, biology, wetlands, hazards, digital maps, geologic mapping, winds, bathymetry and overview of the Bay.
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